What is the function of multiplexing in communication systems?

Multiplexing in communication systems serves the critical function of transmitting multiple signals over a single communication medium. This process allows for several data streams or signals to be combined and sent simultaneously, thereby optimizing the use of network resources and improving the efficiency of communication channels.

Indeed, without multiplexing, each signal would need its own dedicated channel, which could lead to underutilized bandwidth and increased costs. By employing techniques such as Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM), communication systems can maximize the number of users served and enhance capacity without requiring additional physical infrastructure.

The other options relate to different aspects of communication systems: reducing the size of data packets pertains to data compression, enhancing audio quality addresses signal processing techniques, and limiting connected devices refers to capacity management rather than the multiplexing function itself. Each of these is separate from the fundamental purpose of multiplexing, which is specifically about enabling the concurrent transmission of multiple data signals through a single channel.